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Lower second secondary molar tooth: anatomy, location and function

The permanent lower second molar, a four-cusped grinding tooth at the back of the lower arch in this model. It grinds food.

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Highlighted in the model: Lower second secondary molar tooth. Click any part to read about it, or switch off “Highlight topic” to see the whole body. 3D data: BodyParts3D, © The Database Center for Life Science, CC BY 4.0; meshes simplified and recoloured. The model is an adult male.

Lower second secondary molar tooth at a glance

What it is
The permanent lower second molar, a four-cusped grinding tooth at the back of the lower arch in this model.
Location
It lies in the lower dental arch, behind the first molar; it usually has two roots.
Function
It grinds food.
Body system
Digestive · paired (left and right)
FMA ID
FMA55703 (Foundational Model of Anatomy)

Key facts

  • Typical eruption age: about 11 to 13 years.
  • FDI notation: 37 (left) and 47 (right).
  • It usually has four cusps and two roots.
  • The third molars (wisdom teeth) that normally erupt behind it are absent from this model.

Clinical relevance

Dental caries and periodontal disease are the main causes of tooth loss.

Structures next to the lower second secondary molar tooth

The nearest named structures in the 3D model, measured from the centre of each part:

References

  1. Foundational Model of Anatomy: Lower second secondary molar tooth (FMA55703). EMBL-EBI Ontology Lookup Service.
  2. OpenStax. Anatomy and Physiology 2e, §23.1 Overview of the Digestive System. Rice University, 2022.
  3. Mitsuhashi N. et al. (2009). BodyParts3D: 3D structure database for anatomical concepts. Nucleic Acids Research 37, D782–D785. Data © The Database Center for Life Science, CC BY 4.0.

Related anatomy

Explore the whole body in the interactive 3D human anatomy model, or browse the A–Z list of human structures.